Chop the pumpkin into equal sized slices and season with pepper and salt. put a knob of butter onto each slice. Roast in a hot oven at (180°C / 356°F for 40 to 50 min). Turn the slices over half way through. once cooked, let the slices cool slightly. Then scoop the flesh from the skin.
Melt the butter in a pan and sweat the crushed garlic cloves. add the sliced onions and white of leek. Sweat in a covered pan for 5 to 6 min. add the roasted pumpkin flesh. Add the water or the stock and the salt. Bring to the boil and cook on a low flame for 30 to 35 min. Add the mimolette and the cream and cook for a moment longer. Liquidize everything together.
In each soup bowl sprinkle a few grilled chestnut and hazelnut pieces. Pour over the soup. drizzle with cream and dust with grilled nuts. Add the slithers of mature mimolette and scatter with chervil